Bently Nevada 330104-00-12-10-02-00 3300 XL 8 mm Proximity Probe

Introduction

When a critical turbine experiences unexpected vibration, the resulting downtime can cost thousands per hour. The Bently Nevada 330104-00-12-10-02-00 3300 XL 8 mm Proximity Probe provides precise, non-contact shaft displacement measurements to detect early signs of imbalance, misalignment, or bearing wear. Part of the proven 3300 XL series, this probe delivers the accuracy and durability required for continuous protection of rotating assets.

Technical Specifications

The probe features a 1.0 meter (3.3 feet) total length with a 120 mm overall case length and a 00 mm unthreaded length. It uses an M10 x 1 thread and includes armor for enhanced mechanical protection. The connector is a miniature coaxial ClickLoc type with standard cable. The probe tip is made of polyphenylene sulfide (PPS), and the case is constructed from AISI 303 or 304 stainless steel. Nominal probe DC resistance from center conductor to outer conductor is 7.59 ± 0.50 Ω at 1.0 meter length. The probe is designed to seal differential pressure between tip and case using a Viton O-ring.

Industry Applications

This proximity probe is ideal for monitoring radial vibration and axial position in steam turbines, centrifugal compressors, pumps, and large electric motors. In a typical petrochemical plant, the 330104-00-12-10-02-00 mounts near bearing housings to provide real-time shaft displacement data to a vibration monitoring system. The robust stainless steel case and PPS tip withstand harsh environments, ensuring reliable operation in high-temperature or corrosive areas.

Installation & Setup Guidance

Mount the probe using the M10 x 1 threaded hole, ensuring the tip is perpendicular to the target shaft surface. Maintain a nominal gap of 1.27 mm (50 mils) when using an AISI 4140 steel target. Connect the miniature coaxial ClickLoc connector to a compatible 3300 XL extension cable and Proximitor sensor. Verify the system is powered with -17.5 Vdc to -26 Vdc (non-incendive circuit) and that the load is 10 kΩ for accurate performance. Always follow the installation drawing 140979 for proper wiring.

Maintenance & Reliability

Periodically inspect the probe cable and connector for damage or wear. Ensure the mounting threads remain clean and free of debris to maintain proper sealing. The Viton O-ring should be checked during routine maintenance for signs of degradation. Because the probe is designed for continuous operation, regular verification of the DC resistance (7.59 ± 0.50 Ω) helps confirm cable integrity. Replacing worn probes proactively reduces unplanned downtime and extends machinery life.

Selection Guide & Purchasing Advice

Before ordering, verify that the 330104-00-12-10-02-00 matches your system requirements: 8 mm probe size, M10 x 1 thread, 1.0 meter cable length, and miniature coaxial ClickLoc connector. Ensure compatibility with your existing 3300 XL Proximitor sensor and extension cable. For current pricing and availability, contact plcmatrix.com, a trusted supplier of industrial automation components. Their team can help confirm lifecycle status and recommend suitable alternatives if needed.